The experiment is not a test of geoengineering since it will not have any effect on the climate or the weather.

这个实验不是一项地球工程学的试验，因为它不会对气候或天气产生任何影响。

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The experiment will not spray anything other than tapwater into the air, so it is not a test of geoengineering, since it will not have any effect on the climate or the weather.

这个试验只是将自来水而非其它物质喷向空中，不会对气候或天气产生任何影响，所以它不算是一项地球工程学的试验。

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These trade talks are a critical test for the challenge of striking a global deal on climate change.

这些贸易谈判是对能否在气候变化问题上达成全球性协议的挑战的一个关键考验。

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(Test) The U.N.Secretary-General says he is "optimistic" a climate-change agreement can be reached in Copenhagen that will include specific recommendations on key elements that will take effect immediately.

VOA: standard.2009.12.09

And if combined with a number of palaeo-wind records gathered from around the continent, it could provide a useful tool to test climate computer models, they believe.

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The University of Missouri researchers now aim to use their findings to test various climate-change models.

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Its three scientific instruments would probe cosmic rays and clouds to test current models of climate change.

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